[CS 598 DL4H] Add new datasets for Question Answering and Heart Disease

[mguan2020]

Authors (with net id): Don-Thuan Le (dlte2) Matthew Guan (mg95)
Type of contribution: dataset

Paper Name: Uncertainty-Aware Text-to-Program for Question Answering on Structured Electronic Health Records
Paper Link: https://arxiv.org/abs/2203.06918

Description:
This Pull Request does the following:

• Add new dataset used for our DLH course project, along with tests.
• Adds new dataset and task for heart disease prediction. The dataset is from Kaggle (link: https://www.kaggle.com/datasets/krishujeniya/heart-diseae). In order to test the correctness of the task (and therefore the dataset), I included a main function in the task file to print out the first sample from the dataset.

Files changed:
datasets/qa_dataset.py
pyhealth/datasets/init.py
datasets/heart_disease.py
tasks/heart_disease_prediction.py
configs/heart_disease.yaml
tasks/init.py

Once tested, the output will look something like the following: